Answer:
C
Explanation:
- Let acceleration due to gravity @ massive planet be a = 30 m/s^2
- Let acceleration due to gravity @ earth be g = 30 m/s^2
Solution:
- The average time taken for the ball to cover a distance h from chin to ground with acceleration a on massive planet is:
t = v / a
t = v / 30
- The average time taken for the ball to cover a distance h from chin to ground with acceleration g on earth is:
t = v / g
t = v / 9.81
- Hence, we can see the average time taken by the ball on massive planet is less than that on earth to reach back to its initial position. Hence, option C
Answer: The satellite, if it is orbiting at a certain speed once launched into space, will continue to orbit at that same speed until it collided with some other force, such as debris or something along those lines. In space, with the amount of gravitational pull that surrounds the earth, once something falls into orbit, it will continue to orbit the same way as it began. The earth will continue to pull the satellites towards itself with the same amount of force, and so will keep its orbit consistent.
Explanation:
Answer:
The time is
Explanation:
From the question we are told that
The diameter of the circular saw is
The peripheral speed is
The time taken for the blade to come to rest is t = 17 s
The total acceleration of the tooth considered is
Generally the radius of the blade is mathematically represented as
Generally the tangential acceleration of the blade is mathematically represented as
Here v is the final velocity of the tooth of the blade which is zero since the blade came to rest
so
=>
Generally the total acceleration of the tooth of the blade is mathematically represented as
Here is the radial acceleration , now making the subject of the formula we have that
=>
=>
Generally radial acceleration is mathematically represented as
Here is the velocity at which the total acceleration is 130 ft/s2.
=>
=>
=>
Generally the time at which the total acceleration is 130 ft/s2. is mathematically represented as
=>
=>
Answer:
It has to overcome earth's gravity and have enough fuel to land on the moon at a slow enough speed
Polystyrene
is a mixture substance.
<span>Polystyrene is a flexible
plastic used to cater to different products ranging from food tupperwares to
appliances. It is created by putting together, or polymerizing, styrene (building-block
chemical and naturally existed in foods like strawberries, cinnamon, coffee and
beef). When hard, it is used to make food packaging and laboratory equipments.
When put together with different colors, additives or even plastics, it helps
in making electronics, automobile parts, toys, appliances, gardening pots and
equipment and many more</span>